INSMED Inc (INSM) insider trading
Every open-market stock purchase and sale by INSMED Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Roger Adsett (COO) and 4 others sold $42.9M in the last 90 days.
- Last insider buy: Clarissa Desjardins (Director), $75K, 16 months ago.
- Congress: Gilbert Cisneros sold $1K to $15K, 12 months ago.
Last 12 months: insiders bought $0 (0 buys) and sold $167M (59 sales). Last close $129.41 on Sep 11, 2026.
Recent INSM insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 9, 2026 | David R Brennan (Director) | Sold | $3.1M |
| Aug 17, 2026 | Melvin Sharoky Md (Director) | Sold | $638K |
| Aug 10, 2026 | Roger Adsett (COO) | Sold | $32M |
| Aug 10, 2026 | Roger Adsett (COO) | Bought (not open market) | — |
| Aug 10, 2026 | Roger Adsett (COO) | Bought (not open market) | — |
| Aug 10, 2026 | Roger Adsett (COO) | Bought (not open market) | — |
| Aug 6, 2026 | Martina Flammer M.D. (C-suite exec) | Sold | $2.4M |
| Aug 6, 2026 | Martina Flammer M.D. (C-suite exec) | Sold | $1.1M |
| Aug 6, 2026 | Martina Flammer M.D. (C-suite exec) | Bought (not open market) | — |
| Aug 6, 2026 | Martina Flammer M.D. (C-suite exec) | Bought (not open market) | — |
| Jul 23, 2026 | William Lewis (CEO) | Sold | $625K |
| Jul 23, 2026 | William Lewis (CEO) | Sold | $510K |
| Jul 23, 2026 | William Lewis (CEO) | Bought (not open market) | — |
| Jul 23, 2026 | William Lewis (CEO) | Bought (not open market) | — |
| Jul 9, 2026 | William Lewis (CEO) | Sold | $583K |
| Jul 9, 2026 | William Lewis (CEO) | Sold | $398K |
| Jul 9, 2026 | William Lewis (CEO) | Sold | $275K |
| Jul 9, 2026 | William Lewis (CEO) | Bought (not open market) | — |
| Jul 9, 2026 | William Lewis (CEO) | Bought (not open market) | — |
| Jul 6, 2026 | Martina Flammer M.D. (C-suite exec) | Sold | $824K |
| Jul 6, 2026 | Martina Flammer M.D. (C-suite exec) | Sold | $529K |
| Jul 6, 2026 | Martina Flammer M.D. (C-suite exec) | Bought (not open market) | — |
| Jul 6, 2026 | Martina Flammer M.D. (C-suite exec) | Bought (not open market) | — |
| Jun 25, 2026 | William Lewis (CEO) | Sold | $1.2M |
| Jun 25, 2026 | William Lewis (CEO) | Sold | $388K |
Who's trading INSM
- David R Brennan, Director: sold $3.1M (1 sale), last Sep 9, 2026
- Melvin Sharoky Md, Director: sold $4.7M (2 sales), last Aug 17, 2026
- Roger Adsett, COO: sold $48.3M (10 sales), last Aug 10, 2026
- Martina Flammer M.D., C-suite exec: sold $23.3M (40 sales), last Aug 6, 2026
- William Lewis, CEO: sold $32.7M (73 sales), last Jul 23, 2026
- Samuele Butera, VP: other filings, last Jun 23, 2026
- Michael Alexander Smith, C-suite exec: sold $14M (20 sales), last Jun 22, 2026
- Sara Bonstein, CFO: sold $2.1M (6 sales), last Jun 3, 2026
- Carol Schafer, Director: other filings, last May 13, 2026
- Elizabeth M Anderson, Director: sold $3M (2 sales), last May 13, 2026
- Leo Lee, Director: sold $14.7M (5 sales), last May 13, 2026
- Clarissa Desjardins, Director: other filings, last May 13, 2026
- David W J McGirr, Director: other filings, last Feb 9, 2026
- Orlov S Nicole Schaeffer, Officer: sold $21.1M (9 sales), last Jan 2, 2026
- Gilbert Cisneros, Congress: sold $8K (1 sale), last Oct 3, 2025
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